prolog.treeview
Class Tree

java.lang.Object
  |
  +--prolog.treeview.Tree

public class Tree

extends java.lang.Object

implements a tree class able to layout and paint a amount of nodes. the tree must me contained in a container

Field Summary

protected javax.swing.JComponent	container the container containing this tree
protected java.awt.Rectangle	rect the position this tree has in the containing container
protected RootNode	root the root node of this tree

Constructor Summary

Tree()
constructor

Method Summary

void	doLayout() layouts this tree
protected void	doLayout(Node n, int x, int y) the recursive layout method
boolean	exportXml(java.lang.String filename) saves the tree as xml
void	genXml(java.io.Writer out) generates xml representing this object
protected int	getChildsWidth(Node n) returns the width of the childs of this node
javax.swing.JComponent	getContainer() returns the container which contains this tree
java.awt.Rectangle	getPosition() returns the position the tree has in container
java.awt.Dimension	getPreferredSize() returns the preferred size of this tree
protected int	getRecursiveWidth(Node n) returns recusive the total width of the given node and all of its child nodes
protected int	getRecursiveWidth(Node n, int layer) returns recusive the total width of the given node and all of its child nodes
RootNode	getRoot() returns the root of this tree
void	paint(java.awt.Graphics g) paints this tree
void	paintLines(java.awt.Graphics2D g) paints all lines between the nodes
protected void	paintNodes(java.awt.Graphics2D g) paints all nodes
void	repaint() invokes the containers repaint method
void	setContainer(javax.swing.JComponent c) sets the container which contains this tree
void	setPosition(java.awt.Rectangle r) sets the position the tree has in the container
void	setRoot(RootNode node) sets the root of this tree
void	updateTree() layouts the tree and invokes repaint

Methods inherited from class java.lang.Object

, clone, equals, finalize, getClass, hashCode, notify, notifyAll, registerNatives, toString, wait, wait, wait

Field Detail

root

protected RootNode root

the root node of this tree

rect

protected java.awt.Rectangle rect

the position this tree has in the containing container

container

protected javax.swing.JComponent container

the container containing this tree

Constructor Detail

Tree

public Tree()

constructor

Method Detail

setPosition

public void setPosition(java.awt.Rectangle r)

sets the position the tree has in the container

getPosition

public java.awt.Rectangle getPosition()

returns the position the tree has in container

setContainer

public void setContainer(javax.swing.JComponent c)

sets the container which contains this tree

getContainer

public javax.swing.JComponent getContainer()

returns the container which contains this tree

repaint

public void repaint()

invokes the containers repaint method

setRoot

public void setRoot(RootNode node)

sets the root of this tree

getRoot

public RootNode getRoot()

returns the root of this tree

Returns:

the root node of this tree

paintNodes

protected void paintNodes(java.awt.Graphics2D g)

paints all nodes

Parameters:

g - - the graphics context to paint in

paintLines

public void paintLines(java.awt.Graphics2D g)

paints all lines between the nodes

Parameters:

g - - the graphics context to paint in

paint

public void paint(java.awt.Graphics g)

paints this tree

Parameters:

g - - the graphics context to paint in

doLayout

public void doLayout()

layouts this tree

updateTree

public void updateTree()

layouts the tree and invokes repaint

doLayout

protected void doLayout(Node n,
                        int x,
                        int y)

the recursive layout method

Parameters:

n - - the current node

x - - the middle of the new node

y - - the new y

getChildsWidth

protected int getChildsWidth(Node n)

returns the width of the childs of this node

getRecursiveWidth

protected int getRecursiveWidth(Node n)

returns recusive the total width of the given node and all of its child nodes

getRecursiveWidth

protected int getRecursiveWidth(Node n,
                                int layer)

returns recusive the total width of the given node and all of its child nodes

genXml

public void genXml(java.io.Writer out)
            throws java.io.IOException

generates xml representing this object

Parameters:

out - - the writer where to append the xml

Throws:

java.io.IOException -

exportXml

public boolean exportXml(java.lang.String filename)

saves the tree as xml

Parameters:

filename - - the filename to save the file

getPreferredSize

public java.awt.Dimension getPreferredSize()

returns the preferred size of this tree